Year	% of total secondary
2000	20.098669052124
2001	18.7251796722412
2002	20.2423095703125
2003	20.7036094665527
2004	20.3085708618164
2005	21.028600692749
2006	20.4089908599854
2007	20.6040992736816
2008	20.5291805267334
2009	20.2506999969482
2010	19.8726291656494
2011	19.511360168457
2012	19.5427703857422
2013	19.837589263916
2014	20.0245609283447
2015	20.386209487915
2016	20.7759399414062
2017	21.1144409179688
2018	21.0601806640625
2019	21.1496295928955
2020	21.2911205291748
2021	21.2447299957275
2022	21.6473293304443